Drill-press.



J. F. RUTZ, J. K. LUETHB (Kn A. O. RUTZ.

DRILL PRESS.

APPLICATION FILED MAY 16, 1913.

Patented Sept. 1. 1914.

alffoznw ITED STAJMENT era JI J'LIUS IE. RUTZ, JULIUS K. LUETHE, ANDARNOLD 0. RUTZ. OF MILYVAUKEE, WIS- CONSIN, ASSIGNORS TO RULU GASLIGHTER COMPANY, OF MILWAUICEE, W'ISCON SIN, A (ZORPORATION OFWISCONSIN.-

DRILL-PRESS.

Specification of Letters Patent.

Patented Sept. it, 1914:.

To all whom it may concern Be it known that we, JuLros F. Ru rz, JULIUSK. LUETHE, and ARNoLo 0. Run, of Milwaukee, Wisconsin, have invented aDrill-Press, of which the following is a specification.

This invention relates to means for boring and tapping holes, and moreparticularly holes in pipes.

The object which we have in view is to provide a simple appliancewhereby a hole of. predetermined size for a branch-pipe, pet-cock, etc.,may be bored in a pipe which is already set up and access to which, withordinary machines, is difficult or impossible. This is true, forexample, where the pipe is located near a wall and the hole is to bebored on the wall-side of the pipe, which cannot ordinarily be donewithout removing the pipe, or only slowly and with difficulty.

Our apparatus is so constructed that it can beset up in the rightposition and the hole bored and tapped in a few minutes time; and thisis particularly advantageous where a great number of similar holes haveto be similarly treated, as is the case in applying an improvement orattachment to existing apparatus; for example, stoves and heaters.

Our apparatus is further adapted to bore the hole either onthe side'next the operator or on the opposite side, but is intended moreespecially for the latter use.

The nature of our invention and its mode of construction and use areillustrated in the following description taken in connection with theaccompanying drawings, and the principles thereof pointed out in ourclaims.

In; these drawings Figure 1 is a side elevation of a complete drillpress shown in the position of operation; Fig. 2 is a plan-view of thesame Fig. 3 is a longitudinal axial section of the same; Figs. 4, 5 and6 are transverse sections on the planes 4, 5 and 6 looking in thedirectionof the arrow in each case; Fig. 'Zis an end view from theright-handv end of Figs. 1, 2, and 3 with a part of the outside andbearing broken away; Fig. 8 illustrates an alternative and moreelaborated form of yoke or framepiece, showing means for adapting thepress to d1iferent sizes of tap; and Fig. 9 is a sideview of theremovable piece thereof.

In these drawings every reference letter and numeral always refers tothe same part.

A hollow cylindrical member A is provided on which. the other parts aremounted, said member A having bearings a, a at its ends. A.driving-shaft B is disposed within said member A and has journals 6', 6turns ing in the bearings a, a said shaft 13 carries on its right-handend a gear-wheel C keyed to the shaft by pin 0; and on its other end isa collar D secured by a set-screw d to prevent endwise movement of theshaft. Either or both ends of the shaft are provided with means such asa tapered square 6 for turning the shaft by means of a crank, Wrench, orother similar device.

On thetubular member A is mounted a yoke-piece E which has a socket 6(Fig. 8) within which the member A fits, said yokepiece E being fixed tomember A by a pair of screws e projecting into it from opposite sides.Said member E also has another socket e which is internally threaded asshown, to receive a screw-threaded sleeve F. It should be observed-thatthe pitch of the threads on the members E, F, is the same as that of thetap used to thread the finished hole; and where it is desired to adaptthe drill for more than one size tap, the form of yoke-piece E, Fig. 8,is used in place of the form E, said form E having the internal socket eplain-bored so that themember F can slide therein, and havinga sectioncut out and replaced by an internally threaded ring or nut G, which hasone side flat or notched, as at g, to prevent it from turning. Inthiscase, the member F engages the threads of the nut G and the drill can beadapted to a tap having a difierent number of threads by substituting adifferent pair of members F and G having the corresponding pitch. Withinthe sleeve F is rotatably mounted the drill-shaft H, said shaftbeinprovided with a long slot or keyway h in its right-hand end, and aearwheel lie mounted on said shaft and as a key or lug z" projectinginto said keyway 72. so as to turn the shaft while permitting freeendwise movement thereofig he gear-wheel I meshes with the gear-wheel G,and an outer bearing 6 is provided on the yokepiece E or E to supportthe end of the shaft H. Theshaft H has a squared aperture h or otherholding-means to receive the drill J or the tap, as the case may be,which is adapted to bore the pipe K. The pipe-supporting, meanscomprises a fixed jaw M mounted on the member A and secured thereto byscrews m, said jaw being forked as shown to receive the drill, and asliding-jaw N which is forced against the pipe K. by means of a nut Othreaded upon the end of the member A.

An automatic feed, which is adapted to drill or tap, as the case may be,is provided 1 in connection with the sleeve F. The latter has, on thedrill-end, an enlarged flange or head f which is provided withratchetteeth and also is perforated byorie or-more holes f parallel tothe axis. The drill-shaft H has formed on its end an eccentric sheavepawl and the other'apull-pa-wl. Said pawls are held against theratchet-teeth on the head 7" by means of two small plate-springs pmounted on the lower ends of the legs- 32' and pressing against theflat-bases g, r of the respective pawls. The pawls can, therefore, bethrown over into the positions shown in dotted lines'in Fig. 5 out ofengagement with the ratchet-teeth. When the hole is being drilled, thepawls- Q, R, are set in the full-line position so that fwith eachrevolution of the shaft; H produced by turning the crank on the shaft Bthe sleeve F is rotated through an angle corresponding to two ormore'ratchet-teeth and advanced by a likefraction of the pitch. Afterthe hole has been drilled and the tap is inserted in the' holder, thepawls Q and R are "thrown over'in'to the dotted-line position and a pinis inserted into the'holes h, 7 so as effectively to bind the sleeve Fto the shaft H and cause the latter to advance with each revolution adistance equal to the pitch of the tap. Thus the entire operation isperformed rapidly and accurately.

Various changes and modifications in the constructions as herein shownmay be made within the scope of the appended claims Without departingfrom the spirit of our invention, and we wish it understood thereforethat the "latter is not otherwise limited than by the proper scope ofour claims.

The drill is, of course, adapted to be used for other things besidepipe, and with a squared end I)? on each end of the shaft can be used inpractically any situation where there is room enough to apply it.

Having thus described our invention, what We claim as new and desire tosecure by LettersPatent is:

1. In a machine of the class described, the combination ofclamping-means adapted to support the tool fromandfasten it to theobject to be operated upon, a tool-shaft adapted to hold a rotaryend-cuttingtool located on one side of said clamping-means, and meansfor turning said shaft disposed on the opposite side of saidclampingmeans.

2. In a machine of the class described, the combination of asupporting-member, clamping-means on said supporting-member adapted tosecure it in a fixed position to the work and support the tooltherefrom, atool-shaft mounted and rotating on said supportingmember onone side of said clampingmeans, said tool-shaft being adapted to carry arotary end-cutting tool, a drivingshaft carried by saidsupporting-member parallel to said tool-shaft, and a drivingconnectionbetween said tool-shaft and said driving-shaft; said driving-shafthaving means-for applying a crank to either end thereof.

3. In a machine of the class described, the combination of asupporting-mer'nber,-

clamping means on said supporting-member adapted to secure it in a fixedposition to the work and support it therefrom, a toolshaft mounted androtating on said supporting-member on one side of said clamping-means,said tool-shaft being adapted to carry a rotary end-cutting tool, adrivingshaft carried by said supporting-member parallel tosaidtool-shaft, and a drivingconnectionbetween said tool-shaft and saiddriving-shaft said driving-shaft extending from said tool-shaft to theopposite side of said clamping-means and having means for 'applying acrank 'on the end opposite the tool-shaft.

4. In a machine of the class described, the combination of asupporting-member, clamping means on said supporting-member adapted tosecure it in a fixed position to and support it from the work, atool-shaft mounted androtating on said supportingmember on one side ofsaid clamping-means, said tool-shaft being adapted to carry a rotaryend-cutting to'ol' a driving-shaft carried by said supporting-memberparallel to said tool-shaft, a driving-connection "between saidtoolshaft and. said drivingshaft; said driving-shaft extending from saidtool-shaft to the opposite side of said clamping-means and having meansfor applying a crank on the end opposite the toolshaft, and a positivefeed-mechanism mounted on said tool-shaft and operated thereby toadvance 1t uniformly as it rotates.

5. In a machine of the class described, the combination of a framehaving on one end clamping-means adapted to secure it to the work andsupport it therefrom, saidframe passing at one side of the work to theopposite side from said clamp, a toolshaft adapted to hold a rotaryend-cutting tool mounted on said frame upon the opposite end thereof andon the opposite side of the work from said clamp, and a drivingshaftmechanically connected to said toolshaft and supported by said frame atthe same side of the work as said frame.

6. A machine for drilling and. the like on the opposite side of the workfrom that occupied by the operator, comprising a longitudinal frameadapted to pass from frontside to rear-side of the work and carrying adriving-shaft parallel and adjacent thereto, means on the front-end ofsaid shaft for rotating it, clamping-jaws mounted on and projectinglaterally from said frame and adapted to fasten it to the work acrossone side ofwhich said frame passes, a tool-shaft mounted to rotate attherear-end of said machine and adapted to carry a tool on its front-endfacing said clamping-means, and a mechanical driving-connection betweensaid driving-shaft and tool-shaft.

7. In combination with a shaft having means for holding a drill or tap,means for rotating the same while permitting longitudinal movement, ascrew-threaded sleeve in which said shaft turns, a threaded sta tionarysupport for said sleeve, and means for fixing said shaft to said sleeveso that they rotate together whereby said shaft is adapted to beadvanced at the same rate as a tap of the corresponding pitch.

8. In combination with a shaft having means for holding a drill or tap,means for rotating the same while permitting ,longitudinal movement, ascrew-threaded sleeve in which said shaft turns, a fixed threadedsupport with which said sleeve engages, said shaft having an eccentricsheave thereon, a

strap mounted on said sheave and having means for preventing itsrotation whereby it is constrained to reciprocate with the rotation ofsaid shaft, said sheave being provided with a ratchet-toothed rim, and apawl carried by said strap and normally engaging said rim whereby saidsleeve is turned through a certain angle with each revolution of saidshaft.v

9. In combination with a shaft having flange, a

means for holding a drill or tap, means for rotating the same whilepermitting longitudinal movement, a screw-threaded sleeve in which saidshaft turns, a fixed threaded support with which said sleeve engages,said shaft having an eccentric sheave thereon, a strap mounted on saidsheave and having means for preventing its rotation whereby it isconstrained to reciprocate with the rotation of said shaft, said sleevebeing provided with a ratchet-toothed rim, and a pawl carried by saidstrap and normally engaging said rim whereby said sleeve is turnedthrough a certain angle with each revolution. of said shaft; said pawlbeing disengageable from said ratchet-teeth; and means for fixing saidshaft to said sleeve whereby they rotate inunison.

10. A machine of the class described comprising, in combination, atubular support, a driving-shaft rotating within said support having agear-wheel on one end and means for applying a crank thereto on theother end, a pair of clamping-jaws mounted on said support, a yoke-piececarried on said support, a tool-shaft turning in said yoke-piece, asecond gear-wheel meshing with said first gear-wheel and splined to saidtool-shaft, and means operated by the rotation of said shaft foradvancing the same.

11. A drill-press comprising, in combination, a tubular support, adriving-shaft rotating within .said support having a gearwheel on oneend and means for applying a crank thereto on one end, a pair ofclamping-jaws mounted on said support, a yokepiece carried on saidsupport, a drill-shaft turning in said yoke-piece, a second gearwheelvmeshing with said first gear-wheel and splined to said gear-shaft, ascrewthreaded sleeve mounted on said drill-shaft and extending into saidyoke-piece and having on one end a ratchet-toothed rim or flange, afixed internal thread carrier by said yoke-piece and engaging with thethreads on said sleeve, a reciprocating pawl adapted to engage saidratchet-tooth,'and means operated by the rotation of said drillshaft forreciprocating said pawl.

12. A drill-press comprising, in combination, a tubular support, adriving-shaft rotating within said support having a gearwheel on oneend, and means for ap lying a. crank thereto on one end, a pair 0clamping-jaws mounted on said support, a yokepiece carried on saidsupport, a drill-shaft turning in said yoke-piece, a second gearwheelmeshing with said first gear-wheel and splined to said gear-shaft, ascrewthreaded sleeve mounted on said drill-shaft and extending into saidyoke-piece and having on one end a ratchet-toothed rim or fixed internalthread carried by said yoke-piece and engaging with the threads on saidsleeve, a reciprocating pawl adapted to engage said ratchet-teeth, meansoperated by the rotation of said drill-shaft for reciprocating saidpawl, said pawl being adapted to occupy a position out of engagementwith said ratchet-teeth, and means whereby said sleeve may be fixed toor disconnected from said drill-shaft.

In witness w hereof we have hereunto set 10 our hands in the presence oftwo witnesses.

JULIUS F. RUTZ. JULIUS K. LUETHE. ARNOLD O. RUTZ.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Estonia,

Washington, D. C."

